Bach Man can you tell me which 0f your g scale engines will work on 5 ft and 6.5 ft diameter curves. Thanks for the help. I am new to garden railroads. Use to work in o guage but had to downsize home so I am going outside in a small space. 25 ft by 5 or 6.5 ft. I hope 63 years of age is not to old to get started. Thanks again.